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Allison Creek at Rd 114 near York, SC Water Level Today

South Carolina · USGS gauge 021457492 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 021457492 sits on Allison Creek and reads everything draining 40 square miles of the Upper Catawba basin. Its datum sits 572 feet above sea level NAVD88. Daily flow has been on record here since 2008, 18 years of it.

Where this gauge sits in the drainage

No gauged site sits above this one on the mainstem, so this is the first published reading on the river. Downstream the next reading comes from Catawba River below Lake Wylie Dam Fewell Island, SC at 3,020 square miles, so what passes this gauge is about 1% of the water measured there. Water passing here goes on to Catawba River near Rock Hill, SC and Catawba River below Catawba, SC.

Normal flows here

Allison Creek runs a median of 14 cfs at this gauge across 18 years of record. March is the fullest month at a median 29 cfs, and September the leanest at 3.7 cfs. The highest daily mean on record is 1,350 cfs in 2024, and the lowest is 0.1 cfs in 2011.

Median flow by month
MonthMedian flowShare of annual median
Jan23 cfs159%
Feb26 cfs179%
Mar29 cfs200%
Apr23 cfs159%
May17 cfs117%
Jun13 cfs90%
Jul6.9 cfs48%
Aug4.5 cfs31%
Sep3.7 cfs26%
Oct4.8 cfs33%
Nov8.1 cfs56%
Dec17 cfs117%

Medians from the USGS daily-statistics record, 2008 to 2027. A month at 100% is running at its own long-term median.

Flood stages and record crests

Allison Creek reaches flood stage at this gauge at 14 feet. NWS starts watching it at 12 feet. The highest crest on record is 12.7 feet, in August 2008.

NWS flood categories
CategoryGage height
Action12 ft
Minor flooding14 ft
Moderate flooding19 ft
Major flooding22 ft
Highest crests on record
WhenCrest
August 200812.7 ft
December 200912 ft
June 200911.8 ft
December 201311.6 ft
May 20139.5 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge ALIS1. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 021457492. Percentile context computed against the gauge's period of record. Not for navigation.

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